// 搜索框
function search() {
    var search = document.getElementById('srch')
    var srchLabel = document.getElementById('srchlabel');
    srchLabel.onclick = function() {
        srchLabel.style.display = 'none';
    }
    search.onblur =function() {
        srchLabel.style.display= 'block';
    }
}
search()